Bending roller for drawn sheet glass



y y Jan. 1o, 192s. 1,655,924

C. TRUE-:LOVE ET AL BENDING ROLLER FOR DRAWN SHET GLASS Filed Feb. Il,1924 imwmma ca `po .bending operation. Adjacent each end ai 'n separatesleeve member 8 is inset into the surfaceof cylinder 4 so that the outersheetroller carrying surface of sleeve 8 is substantially a continuationof the cylindrical surface 7 of the roller. In order to permit theinsertion ofthis sleeve 8, roller 4 may be made of telescopin partsscrewed together as at 9, and

earings 10 are preferably used between the sleeve 8 and the supportingpor tion of roller 4. The sheet-carrying surface of sleeve 8 ispreferably gro'oved or knurled 'as indicated at 11 to positively gripthe roughened edge portions 6 of the glass sheet andhold the sheetagainst lateral contraction while passing around the bending member.

' While means are usually provided to drive the roller 4, to assist inbeginning the sheetdrawing operation, ordinarily this roller 4 turnsidly 1n roller bearings when the drawing operation is once under way.vThe roller 4 will then be rotated by the rict-ional contact ofthe glasssheetfl bearing on the polished cylindrical surface 7. Since the sleeves8 are also freely rotatable with respect to themain body ortion ofroller 4, the edge p0rtions 6 of the sheet which are carried b thesleeves 8 may rotate either faster or s ower than the main portion ofthe sheet, thus relieving thev sheet from any unnecessary strains andeliminating the necessity for slipv page of the lire-polished sheetsurfaces upon the sheet-carrying surface 7 `of the bending roller.

The'bending roller 12. disclosed in Fig. 3 has tapered or conical endportions 13 adapted to carry the thickened edge portions O14 of glass.sheetl. This allows-the thickened ed e'portions to make the bend on asmaller ra ius, thus compensating vfor an increased speed of theseedgeportions and functioning lng the main central portion of the sheet,

and freely rotatable portions for-supporting theedge portions of thesheet.

2. In an apparatus for drawing sheet glass, a roller about which thesheet is deflected from one plane to another, the roller comprisinfreely rotatable sleeves adjacent its ends. or carrying the edgeportions of the sheet.

3. In an apparatus for drawing sheet glass, a roller about which thesheet is deiected from one plane to another, the roller comprising acentral portion and freely rotatable end portions adapted to carry theedge portions of the sheet, the said end portions of the roller beingknurled.

4. In an apparatus for drawing sheet glass, a bending roll fordefiecting the sheet from one plane to another, said rollbeinr providedwith-independently rotatable end sections which may be rotated at speedsrelativeto the speed of said bending roll, said end sections beingindependently rotatable relative to one another. s

5. In an apparatus for drawing sheet glass, aroller about which thesheet is defiected from one plane Ato another, the roller comprising a.cylindrical central portion for carr ing the main body of the sheet, andfree y 'rotatable end portions adapted to carry the edge portions of thesheet.

6. In an apparatus for drawing sheet glass, a bending roll fordeilecting the sheet from one plane to another, and independentlyrotatable end sections journaled on said 1'oll.

Signed at Charleston, in the county of Kanawha, and State of lVestVirginia, this 28th lday of January, 1924.

CHARLES TRUELOVE. WILLIAM T. HAIGHT.

